#123C4F#123C4F

#123C4F is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.056 H 231.6°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#123C4F
RGB	rgb(18, 60, 79)
HSL	hsl(199, 63%, 19%)
HSV	hsv(199, 77%, 31%)
CMYK	cmyk(77.2%, 24.1%, 0%, 69%)
CIE-LAB	lab(23.42, -7.20, -15.73)
CIE-LCH	lch(23.42, 17.30, 245.42°)
OKLab	oklab(33.67% -0.035 -0.0442)
OKLCH	oklch(33.67% 0.056 231.6)
XYZ	xyz(3.2760, 3.9245, 7.9805)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C4F #4F2512

analogous

#124F44 #123C4F #121E4F

triadic

#123C4F #4F123C #3C4F12

tetradic

#123C4F #44124F #4F2512 #1E4F12

square

#123C4F #44124F #4F2512 #1E4F12

split-complementary

#123C4F #4F121E #4F4412

monochromatic

#061319 #07161D #123C4F #1D6281 #2988B3

Accessibility & contrast

On white

11.76

#123C4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#123C4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C4F

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C4F	#FFFFFF	#000000	##FFFFFF
##123C4F	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323B50

Deuteranopia (green-blind)

#2A354F

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #123c4f;
/* rgb */ color: rgb(18, 60, 79);
/* oklch */ color: oklch(33.7% 0.056 231.6);

Tailwind

colors: {
  custom: {
    50: '#597180',
    500: '#123c4f',
    950: '#000000',
  },
}

SCSS

$custom: #123c4f;
$custom-light: #597180;
$custom-dark: #000000;

JSON

{
  "hex": "#123c4f",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 79
  },
  "hsl": {
    "h": 198.689,
    "s": 62.887,
    "l": 19.02
  },
  "oklch": {
    "l": 0.33672,
    "c": 0.05639,
    "h": 231.6
  },
  "luminance": 0.03925
}

Semantic roles & 50–950 ramp

primary

#123C4F

secondary

#884F35

accent

#7542E6

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #123C4F

Body copy rendered with the generated semantic roles for this colour.

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